Description
DS3800HMPF1E1E: Product Overview
The DS3800HMPF1E1E is the central microprocessor board for GE Speedtronic Mark IV gas- and steam-turbine control racks. Occupying one 6BA03 slot, it hosts the primary CPU, EPROM firmware, and deterministic control algorithms that govern speed PID, load control, temperature limiting, and protective tripping. The card is hardware-deterministic (no firmware download) and suitable for SIL-2 / API 670 turbine control when triple-redundant.
The board belongs to the DS3800 daughterboard architecture, allowing hot-swap replacement without rewiring the turbine deck. Gold-plated edge fingers, conformal coat, and –20 °C to +70 °C rating ensure 25-year service life in coal-dust, salt-fog, or high-vibration environments.
DS3800HMPF1E1E
DS3800HMPF1E1E: Technical Specifications
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Model Number: DS3800HMPF1E1E
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Manufacturer: General Electric (GE)
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Product Type: Microprocessor Board (CPU / Regulator)
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System Compatibility: Speedtronic Mark IV (6BA03 slot)
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CPU: Intel 8086 16-bit, deterministic, parity-checked buses
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Memory: 64 kB EPROM (field-erasable), 32 kB RAM (battery-backed)
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Scan Rate: 5 ms deterministic, jitter <50 µs
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I/O Capacity: 4096 DI/DO, 1024 AI/AO (voted), 16-bit resolution
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Interfaces: RS-232/485 embedded, dual 34-pin ribbon back-plane
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Isolation: 1500 V AC board-to-ground, 500 V channel-to-channel
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Indicators: Green = run, Red = fault / watchdog
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Operating Temperature: -20 °C to +70 °C; Storage: -55 °C to +125 °C
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Certifications: SIL-2 (IEC 61508), API 670, IEEE 344 seismic, CE
Core Features & Customer Value
Deterministic 5 ms Scan for Grid-Code Compliance
The Intel 8086 CPU and hardware-based scan timer ensure bit-exact congruence across all three CPU legs; voter disagreement is <50 µs, mandatory for SIL-2 TMR certification and NERC frequency-response requirements.
The Intel 8086 CPU and hardware-based scan timer ensure bit-exact congruence across all three CPU legs; voter disagreement is <50 µs, mandatory for SIL-2 TMR certification and NERC frequency-response requirements.
Hot-Swap Redundancy Without Outage
Plug-and-play replacement in TMR racks; remaining two CPUs carry load while faulted board is swapped in <5 min, achieving >99.97 % start reliability on combined-cycle fleets.
Plug-and-play replacement in TMR racks; remaining two CPUs carry load while faulted board is swapped in <5 min, achieving >99.97 % start reliability on combined-cycle fleets.
Field-Calibratable Without Software
17 gold-pinned jumpers select scan rate, I/O maps, and gain/offset—technician can tune for different turbine inertia or generator rating using only a screwdriver and the silk-screen legend, no laptop required.
17 gold-pinned jumpers select scan rate, I/O maps, and gain/offset—technician can tune for different turbine inertia or generator rating using only a screwdriver and the silk-screen legend, no laptop required.
Surge-Hardened for Turbine Deck
TVS diodes and opto-isolators clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. The 1500 V isolation barrier prevents ground-fault propagation to CPU cards, reducing unplanned replacement by >60 % compared with commercial CPUs.
TVS diodes and opto-isolators clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. The 1500 V isolation barrier prevents ground-fault propagation to CPU cards, reducing unplanned replacement by >60 % compared with commercial CPUs.
Typical Applications
Gas Turbine Speed & Load Control
Primary CPU for Frame 7/9 heavy-duty units: executes speed PID, acceleration schedule, fuel staging, and grid synchronizing. Triple redundancy ensures 99.97 % start reliability and <0.25 % forced-outage rate on combined-cycle fleets.
Primary CPU for Frame 7/9 heavy-duty units: executes speed PID, acceleration schedule, fuel staging, and grid synchronizing. Triple redundancy ensures 99.97 % start reliability and <0.25 % forced-outage rate on combined-cycle fleets.
Steam Turbine Governor & Protection
Speed/current loops drive Moog servo valves on governor and over-speed protection valves. Deterministic response prevents valve dither and mechanical wear, extending servo life to >100 k hours.
Speed/current loops drive Moog servo valves on governor and over-speed protection valves. Deterministic response prevents valve dither and mechanical wear, extending servo life to >100 k hours.
Island-Mode & Black-Start Operation
Master timing reference for excitation, synchronizing, and load-sharing when grid is lost. Deterministic voter guarantees phase-angle matching <0.5°, mandatory for NERC PRC-024-2 ride-through.
Master timing reference for excitation, synchronizing, and load-sharing when grid is lost. Deterministic voter guarantees phase-angle matching <0.5°, mandatory for NERC PRC-024-2 ride-through.
